Garlic is one of the most rewarding crops you can grow in a raised bed, and one of the most forgiving. You plant it in the fall, ignore it through winter, harvest in midsummer, and — with proper curing and storage — eat homegrown garlic for the next nine months or more. A single 4x8-foot raised bed, spaced properly, holds 60 to 100 cloves and produces 60 to 100 bulbs. For a household that uses one to two bulbs per week, that is a full year's supply from 32 square feet of garden space.
If you have never grown garlic before, you are about to discover that grocery store garlic is to homegrown garlic what cardboard is to wood. The flavour difference is not subtle — it is transformative. Homegrown garlic has a complexity and depth that the bleached, irradiated, imported bulbs at the supermarket cannot touch. And once you grow it, you will never buy garlic again, because each harvest produces the seed stock for next year's crop. It is the most self-sustaining crop in the garden.
Hardneck vs Softneck: Choose the Right Type
Garlic comes in two main types, and choosing the right one for your climate is the first decision that matters.
Hardneck Garlic
Hardneck varieties produce a stiff central stalk called a scape that curls and coils as it grows. They thrive in cold-winter climates (USDA zones 3 through 7) because they require a prolonged cold period — called vernalization — to form proper bulbs. Without at least eight weeks of soil temperatures below 40 degrees Fahrenheit, hardneck garlic will not divide into individual cloves and you will harvest a single, undifferentiated bulb called a round.
The payoff for the cold requirement is superior flavour. Hardneck garlic has a richer, more complex taste than softneck — spicy, nutty, and sometimes sweet depending on the variety. Each bulb produces four to twelve large cloves arranged in a single ring around the central stalk. Large cloves mean less peeling per meal, which matters when you cook with garlic daily.
Popular hardneck varieties include Music (reliable, large bulbs, stores well), German Extra Hardy (survives even zone 3 winters), and Purple Stripe (exceptional raw flavour, beautiful purple-streaked wrappers). Rocambole types like Spanish Roja have the strongest, most complex flavour of any garlic but store for only four to five months — eat them first.
Softneck Garlic
Softneck varieties do not produce a scape and have a flexible stalk that can be braided for decorative storage. They are more adaptable to mild-winter climates (zones 7 through 10) because they need less cold exposure to form bulbs, though they still benefit from some winter chill. Softneck garlic is what you find in grocery stores because it stores longer (eight to twelve months), ships better, and grows more reliably in warm climates.
Each softneck bulb contains 12 to 20 cloves in multiple layers. The outer cloves are large; the inner ones are often small and fiddly to peel. The flavour is milder and less complex than hardneck — pleasant but not as exciting. Silverskin and Artichoke types are the two main softneck groups. California Early and California Late are widely available and reliable. Inchelium Red is a softneck with better-than-average flavour that has won taste competitions against hardneck varieties.
Which to Grow
If you live in zones 3 through 6, grow hardneck for the best flavour and easiest cultivation. In zone 7, either type works — I would grow hardneck for flavour and supplement with a softneck variety for longer storage. In zones 8 through 10, stick with softneck varieties that do not require deep winter cold.
When to Plant: Fall Is the Only Answer
Garlic is planted in fall, four to six weeks before the ground freezes solid. This gives the cloves enough time to develop roots but not enough time to send up significant top growth before winter. In USDA zone 5, that means mid-October. In zone 6, late October to early November. In zone 7, November. In zones 8 and 9, November to December.
Spring planting is possible but produces smaller bulbs because the plants miss the vernalization period and have a shorter growing season. Fall-planted garlic has eight to nine months in the ground; spring-planted garlic has four to five. The difference in bulb size is substantial — spring-planted garlic typically produces bulbs half the size or less.
Spacing and Bed Layout
The standard spacing for garlic in a raised bed is six inches between cloves in all directions. In a 4x8-foot bed with six-inch spacing, you can plant roughly 96 cloves (8 rows of 12 cloves each, leaving three inches from the bed edges). Some growers tighten to four-inch spacing, which yields more bulbs but smaller ones. Six inches is the sweet spot for full-sized bulbs without wasting space.
Use the spacing calculator to plan your layout for different bed sizes. If your bed is 4x4, you will fit about 36 cloves at six-inch spacing — still enough for most households if you use garlic moderately. If you are serious garlic eaters, dedicate two beds or build a standard white oak raised bed specifically for garlic — it will be the best-performing permanent bed in your garden.
Plant cloves two to three inches deep in cold climates (zones 3 through 5) and one to two inches deep in mild climates (zones 7 through 9). Always plant with the pointed end up and the flat basal plate (where roots emerge) down. A clove planted upside down will still grow — the shoot will curve around and find its way up — but it wastes energy and produces a slightly smaller bulb.
Soil Preparation
Garlic is a heavy feeder that spends eight to nine months in the ground, so soil preparation matters more than for most crops. Start with well-drained, fertile soil — garlic will not tolerate waterlogged conditions, especially during the cool, wet months of fall and spring. Raised beds have a natural advantage here because they drain faster than in-ground plantings.
Amend the bed with two to three inches of aged compost worked into the top eight inches of soil. Add a balanced organic fertilizer (something like 4-4-4 or 5-5-5) at the rate recommended on the package — typically two to four cups per 32 square feet. Garlic particularly benefits from phosphorus for root development and sulphur for flavour development. Bone meal (phosphorus) and gypsum (calcium and sulphur) are both useful amendments for garlic beds.
Soil pH should be between 6.0 and 7.0. If your soil is acidic (below 6.0), add garden lime according to a soil test's recommendation. If alkaline (above 7.5), add elemental sulphur. Most raised bed soils filled with a compost-based mix fall naturally in the 6.5 to 7.0 range and do not need pH adjustment.
Mulching Through Winter
After planting, mulch the bed with four to six inches of straw, shredded leaves, or pine needles. This mulch serves three purposes: it insulates the soil against extreme temperature swings that can heave cloves out of the ground, it suppresses winter and early spring weeds, and it retains moisture during the growing season so you water less.
In spring, garlic shoots will push right through the mulch. Leave the mulch in place — it continues to suppress weeds and conserve moisture throughout the growing season. If the mulch mats down and seems to be blocking shoots, loosen it gently with your fingers but do not remove it.
Spring Care and Scapes
Garlic needs very little attention from planting through spring. Once shoots emerge, water when the top inch of soil feels dry — roughly an inch of water per week through spring and early summer. Stop watering two to three weeks before harvest to let the bulbs firm up and begin curing in the ground. Side-dress with a nitrogen-rich fertilizer (blood meal, fish emulsion, or composted manure) in early spring when shoots are six to eight inches tall. One application is sufficient.
Hardneck garlic sends up scapes in late spring or early summer — curling green stalks with a small bulbil (miniature bulb) at the tip. Snap or cut scapes off when they have made one full curl. Removing scapes redirects the plant's energy from seed production to bulb development, increasing bulb size by 20 to 30 percent in some studies. And scapes themselves are a culinary bonus — they have a mild garlic flavour and are excellent sauteed, grilled, blended into pesto, or pickled. Scape pesto (scapes, olive oil, parmesan, pine nuts) is a seasonal delicacy that garlic growers look forward to all year.
Harvest Timing
Harvest timing is the trickiest part of growing garlic, because there is no single date — it depends on variety, climate, and the specific year's weather. The visual cue is the leaves: garlic is ready to harvest when the bottom three to four leaves have turned brown and dried, while the top four to five leaves are still green. Each green leaf corresponds to one wrapper layer on the bulb. You want enough wrappers remaining to protect the bulb during curing and storage.
If you harvest too early, the bulbs will be small and the cloves will not have fully divided. If you harvest too late, the wrappers will have deteriorated and the bulb will start to split open, which looks dramatic but reduces storage life significantly.
To check readiness, carefully dig one test bulb with a garden fork (do not pull — you will break the stalk and damage the bulb). The cloves should be plump, filling out the wrappers, with distinct individual cloves visible through the outer skin. If the cloves are still small and tight, wait another week and check again.
In most climates, hardneck garlic harvests in late June to mid-July. Softneck types mature two to three weeks later. Use a garden fork to loosen the soil around each bulb, then lift gently. Brush off loose soil but do not wash the bulbs — excess moisture during curing promotes mould.
Curing for Long-Term Storage
Curing is the step that transforms freshly harvested garlic into a product that lasts six to nine months in storage. Without curing, garlic will soften, sprout, or mould within weeks.
Spread harvested bulbs in a single layer on a screen, rack, or slatted table in a warm, dry, well-ventilated spot out of direct sunlight. A covered porch, a garage with the door open, or a shed with good airflow all work. Do not cure in direct sun — it can literally cook the bulbs and cause sunscald that reduces storage life.
Cure for two to four weeks until the wrappers are papery and dry, the neck is completely dried out, and the roots are dry and brittle. You will know curing is complete when cutting the stem produces no moisture. After curing, trim the roots to a quarter inch and cut the stalks to one inch above the bulb (or leave softneck stalks long for braiding). Remove the dirtiest outer wrapper layer if needed, but leave as many intact wrappers as possible — they are the bulb's natural packaging.
Storage: Making It Last
Properly cured garlic stores best at 55 to 65 degrees Fahrenheit with 45 to 55 percent humidity and good air circulation. A basement, root cellar, or unheated room is ideal. Mesh bags, open baskets, and braids all provide adequate air circulation. Do not store garlic in plastic bags or sealed containers — trapped moisture causes mould.
Hardneck garlic stores for four to seven months depending on the variety. Rocambole types are the shortest keepers (four to five months); Porcelain types like Music last six to seven months. Softneck garlic stores for eight to twelve months under good conditions. By growing both types and eating the shortest-keeping varieties first, you can have homegrown garlic from July through April or May — at which point the new season's scapes arrive and the cycle continues.
For garlic that will not make it to the end of storage — varieties already starting to soften or sprout — process and preserve it. Roast whole heads, squeeze out the softened cloves, and freeze in ice cube trays. Mince raw garlic and freeze in olive oil. Dehydrate sliced garlic and grind into garlic powder. Any of these methods captures the flavour before the fresh bulbs decline.
Saving Seed for Next Year
The beauty of garlic is that it is completely self-perpetuating. Each bulb you harvest contains the seed stock for next year's crop. Set aside your ten to fifteen best bulbs at harvest — the largest, most symmetrical, healthiest specimens — and store them with your eating garlic until planting time in fall. Break them into individual cloves the day you plant, discard any cloves that are damaged, soft, or discoloured, and plant the biggest cloves from each bulb. Over years, this selection pressure gradually improves your garlic — you are always planting from the best performers.
One bulb with eight cloves becomes eight bulbs the following year. Plant fifteen bulbs and you get roughly 120 bulbs — enough to eat for a year and still save seed for the next planting. The math is generous, and within two to three years of saving your own seed, you will never need to buy garlic planting stock again.
Frequently Asked Questions
Can I plant garlic from the grocery store?
You can, but it is not ideal. Grocery store garlic is often treated with growth inhibitors to extend shelf life, and it is almost always a softneck variety grown in a different climate from yours. It may not be adapted to your growing conditions. For the best results, buy seed garlic from a reputable seed garlic supplier — the varieties are chosen for performance, the cloves are guaranteed disease-free, and you can select types suited to your USDA zone. After the first year, save your own seed and you will never need to buy again.
What are garlic bulbils and can I plant them?
Bulbils are the tiny cloves that form inside the scape's seed head if you do not remove the scape. They range from the size of a grain of rice to the size of a pea. You can plant them, but they take two to three growing seasons to produce a full-sized bulb. In year one, a bulbil produces a single undivided round the size of a marble. Plant that round in fall, and in year two it produces a small bulb with a few cloves. By year three, you have full-sized bulbs. Growing from bulbils is useful for increasing your stock of a rare or expensive variety, but for standard production, planting full-sized cloves is far more efficient.
Why is my garlic producing tiny bulbs?
The most common causes are planting too late in spring instead of fall (insufficient vernalization), overcrowding (spacing tighter than four inches), nutrient-poor soil (garlic is a heavy feeder), or leaving scapes on hardneck varieties (energy goes to seed production instead of bulb growth). Address all four factors: plant in fall, space at six inches, amend soil generously with compost and balanced fertilizer, and remove scapes promptly.
How do I know if my garlic has a disease?
The most common garlic diseases are white rot (white fluffy mould at the base of the bulb, cloves turn soft and watery), fusarium basal rot (rotting from the bottom up, often with pink or reddish discolouration), and bloat nematode (swollen, distorted cloves that smell foul). If you see any of these signs, remove and destroy affected plants — do not compost them. Do not plant garlic or other alliums in that bed for at least four years. Buying certified disease-free seed garlic and rotating planting locations annually are the best preventive measures.
Can I grow garlic in containers?
Yes, garlic grows well in containers at least twelve inches deep with good drainage. Use the same soil, spacing, and timing as raised bed planting. The main challenge is insulation through winter — container soil freezes faster and deeper than raised bed soil. In cold climates, move containers to an unheated garage or pack straw bales around them for insulation. Water containers more carefully in spring since they dry out faster than beds.